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bekah5332 bekah5332
  • 04-02-2017
  • Mathematics
Answered

I'm lost.. How do you even start it???

I m lost.. How do you even start it??? class=

Verified Answer :

konrad509
konrad509 konrad509
  • 04-02-2017

\(2x+y=4\\ -x+y=1\\\\ 2x+y=4\\ \underline{x-y=-1}\\ 3x=3\\ x=1\\\\ 1-y=-1\\ y=2\)

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wolf1728
wolf1728 wolf1728
  • 04-02-2017
A2x + y = 4
B)  -x + y = 1

Multiply B) by 2
B) -2x + 2y = 2  then add to A)
A) 2x + y = 4

3 y = 6
y = 2

B) -x + y = 1
-x +2 =1
x = 1

Answer Link

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